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Classification search
It is possible to access the relevant ECLA classification symbols for a more efficient search on a given technical subject.
If a particular ECLA symbols is known, or found on some documents after a Quick Search based on keywords, its description can be consulted by using the Find description for a symbol search field, followed by a click on Go.
If you tick the checkbox in front of "show notes", you will find further relevant information about the classifications listed.
It is possible also to search for relevant ECLA symbols by starting with a simple query in the Find classification(s) for keywords search field, followed by a click on Go. The underlying algorithm is making use of the statistical relevance of symbols that have already been allocated to documents classified with ECLA: the more boxes are displayed to the left of the description of the group, the more frequently the search query occurs in the documents of this group – a symbol with a large number of boxes is potentially relevant, in statistical terms. By way of example, the simple search query tennis racket? shows that A63B49 is possibly and likely a pertinent symbol.
After a classification search by keywords, and after consulting the description for the statistically more relevant symbol(s), you may use this result to continue searching in this direction. To do so, click the on the text or on the red classification symbol to view the subdivisions, and repeat to view details of a particular subdivision.
It is easy to export the result of a Classification Search to the Advanced Search mask : you tick the checkbox next to a symbol and this symbol will be copied into the mask, where you can then (re-)start a search combining several search fields. Optimal search results will be achieved by combining queries in the ECLA and abstract fields.
For more information on patent searching, see the following pages:
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